Go to the "Search" box, upper right. Enter Zerk fitting. Be sitting down with a cuppa when you start. The long list of referenced threads will show a lot that are germane to the question (and some only distantly related!)
My offhand guess is that you will find an OEM grease (zerk) fitting in at least two (or three) places on the tube. And some will be arduous to get to. Contorting and cursing may be involved. Replacement is often called for, after so many decades.
Once you pump a full tube of new grease into the tube and rotate the post back n forth a few times, the steering will be much better. Velvety, as some might say. This is regular preventive maintenance that very few first or second/third owners may have thought about.
Until I joined the EY site I was ignorant about this, and a number of other things as well...
irreverent Philosophy 101: buying a larger sailboat is a little bit like getting married. You find that the rewards are amazing, and then find that regular maintenance of the relationship is required, as well.